202657-76-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 202657-76-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,0,2,6,5 and 7 respectively; the second part has 2 digits, 7 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 202657-76:
(8*2)+(7*0)+(6*2)+(5*6)+(4*5)+(3*7)+(2*7)+(1*6)=119
119 % 10 = 9
So 202657-76-9 is a valid CAS Registry Number.